A Major Cause for Network Instability Due to LSA Storms
Under Overload Certain Essential Tasks Are Not Done In Time
- Critical Messages Get Queued Behind Other Work Due to FCFS Nature of Service Discipline
Examples of Critical Messages
- Hello
- LSA Acknowledgment
- LSA Carrying Bad News
The Situation Gets Worse If we Make the IGP More Responsive By Reducing Hello, Router-Dead, Hold-Down Timers
However, it is not easy to identify Special IGP Packets From Other IGP and Data Packets